package com.lucas_main.uvicultimate;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONArray;
import org.json.JSONObject;


import com.lucas_main.uvicultimate.DBAdapter.DatabaseHelper;

import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.annotation.TargetApi;
import android.app.Activity;
import android.content.Context;
import android.content.SharedPreferences;
import android.content.res.Resources.NotFoundException;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Bundle;
import android.text.TextUtils;
import android.util.Log;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.View;
import android.view.inputmethod.EditorInfo;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

/**
 * Activity which displays a login screen to the user, offering registration as
 * well.
 */
public class LoginActivity extends Activity {
	
	/**
	 * Keep track of the login task to ensure we can cancel it if requested.
	 */
	
	private UserLoginTask mAuthTask = null;
	DBAdapter db = new DBAdapter(this);

	// Values for email and password at the time of the login attempt.
	private String mEmail;
	private String mPassword;
	
	

	// UI references.
	private EditText mEmailView;
	private EditText mPasswordView;
	private View mLoginFormView;
	private View mLoginStatusView;
	private TextView mLoginStatusMessageView;
	TextView resultView;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);

		setContentView(R.layout.activity_login);
		// Set up the login form.
		
		mEmailView = (EditText) findViewById(R.id.email);
		mEmailView.setText(mEmail);
		
		mPasswordView = (EditText) findViewById(R.id.password);
		mPasswordView
				.setOnEditorActionListener(new TextView.OnEditorActionListener() {
					@Override
					public boolean onEditorAction(TextView textView, int id,
							KeyEvent keyEvent) {
						if (id == R.id.login || id == EditorInfo.IME_NULL) {
							attemptLogin();
							return true;
						}
						return false;
					}
				});
		
		//Check for previous login
		String savedEmail = checkPreviousLogin();
		if (savedEmail != "None"){
			//Set login email to the previous pick up one
			mEmailView.setText(savedEmail);			
		}

		mLoginFormView = findViewById(R.id.login_form);
		mLoginStatusView = findViewById(R.id.login_status);
		mLoginStatusMessageView = (TextView) findViewById(R.id.login_status_message);

		findViewById(R.id.sign_in_button).setOnClickListener(
				new View.OnClickListener() {
					@Override
					public void onClick(View view) {
						attemptLogin();
					}
				});
	}
	//Check for previous login
	public String checkPreviousLogin (){
		
		try{
			
			db.open();
			Cursor c = db.getUser();
			if(c.moveToFirst()){
				Log.d("SQL", "About to display record");
				mPasswordView.requestFocus();
				//Index 3 is the email address in the database
				return c.getString(3);
				
			}
			db.close();
			

		}
		catch (Exception e){
			Log.e("Database Problem", e.toString());
			return "";
		}
		return "";	
		
	}
	public void DisplayRecord(Cursor c) {
		Toast.makeText(this,
				"id: " + c.getString(0)
				+"\nusername: " + c.getString(1),
				Toast.LENGTH_LONG).show();
	}
	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		super.onCreateOptionsMenu(menu);
		getMenuInflater().inflate(R.menu.login, menu);
		return true;
	}

	/**
	 * Attempts to sign in or register the account specified by the login form.
	 * If there are form errors (invalid email, missing fields, etc.), the
	 * errors are presented and no actual login attempt is made.
	 */
	public void attemptLogin() {
		if (mAuthTask != null) {
			return;
		}

		// Reset errors.
		mEmailView.setError(null);
		mPasswordView.setError(null);

		// Store values at the time of the login attempt.
		mEmail = mEmailView.getText().toString();
		mPassword = mPasswordView.getText().toString();

		boolean cancel = false;
		View focusView = null;

		// Check for a valid password.
		if (TextUtils.isEmpty(mPassword)) {
			mPasswordView.setError(getString(R.string.error_field_required));
			focusView = mPasswordView;
			cancel = true;
		} else if (mPassword.length() < 4) {
			mPasswordView.setError(getString(R.string.error_invalid_password));
			focusView = mPasswordView;
			cancel = true;
		}

		// Check for a valid email address.
		if (TextUtils.isEmpty(mEmail)) {
			mEmailView.setError(getString(R.string.error_field_required));
			focusView = mEmailView;
			cancel = true;
		} else if (!mEmail.contains("@")) {
			mEmailView.setError(getString(R.string.error_invalid_email));
			focusView = mEmailView;
			cancel = true;
		}

		if (cancel) {
			// There was an error; don't attempt login and focus the first
			// form field with an error.
			focusView.requestFocus();
		} else {
			// Show a progress spinner, and kick off a background task to
			// perform the user login attempt.
			mLoginStatusMessageView.setText(R.string.login_progress_signing_in);
			showProgress(true);
			mAuthTask = new UserLoginTask();
			mAuthTask.execute((Void) null);
		}
	}

	/**
	 * Shows the progress UI and hides the login form.
	 */
	@TargetApi(Build.VERSION_CODES.HONEYCOMB_MR2)
	private void showProgress(final boolean show) {
		// On Honeycomb MR2 we have the ViewPropertyAnimator APIs, which allow
		// for very easy animations. If available, use these APIs to fade-in
		// the progress spinner.
		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) {
			int shortAnimTime = getResources().getInteger(
					android.R.integer.config_shortAnimTime);

			mLoginStatusView.setVisibility(View.VISIBLE);
			mLoginStatusView.animate().setDuration(shortAnimTime)
					.alpha(show ? 1 : 0)
					.setListener(new AnimatorListenerAdapter() {
						@Override
						public void onAnimationEnd(Animator animation) {
							mLoginStatusView.setVisibility(show ? View.VISIBLE
									: View.GONE);
						}
					});

			mLoginFormView.setVisibility(View.VISIBLE);
			mLoginFormView.animate().setDuration(shortAnimTime)
					.alpha(show ? 0 : 1)
					.setListener(new AnimatorListenerAdapter() {
						@Override
						public void onAnimationEnd(Animator animation) {
							mLoginFormView.setVisibility(show ? View.GONE
									: View.VISIBLE);
						}
					});
		} else {
			// The ViewPropertyAnimator APIs are not available, so simply show
			// and hide the relevant UI components.
			mLoginStatusView.setVisibility(show ? View.VISIBLE : View.GONE);
			mLoginFormView.setVisibility(show ? View.GONE : View.VISIBLE);
		}
	}

	/**
	 * Represents an asynchronous login/registration task used to authenticate
	 * the user.
	 */
	public class UserLoginTask extends AsyncTask<Void, Void, InputStream> {
		@Override
		protected InputStream doInBackground(Void... params) {
			// attempt authentication against a network service.
			InputStream inStream = null;
			try {
				HttpClient httpclient = new DefaultHttpClient();				
				HttpPost httpPost = new HttpPost ("http://www.uvicultimate.com/apps/get_user_login.php?email=" + mEmail + "&password=" + mPassword);
				HttpResponse response = httpclient.execute(httpPost);
				HttpEntity entity = response.getEntity();
				inStream = entity.getContent();				
				return inStream;
			} catch (Exception e) {
				Log.e("log_tag", "Error in http connection " + e.toString());
				return null;
			}
			// TODO: register the new account here.
			//return false;
		}

		@Override
		protected void onPostExecute(InputStream inStream) {
			mAuthTask = null;
			showProgress(false);
			
			try{
				Boolean success = false;
				//Gets all the info regardless
                BufferedReader reader = new BufferedReader(new InputStreamReader(inStream,"iso-8859-1"),8);
                StringBuilder sb = new StringBuilder();
                String line = null;
                while ((line = reader.readLine()) != null) {
                        sb.append(line + "\n");
                }
                inStream.close();
                
                //if php returns "fail" then wrong login
                if (sb.toString().contains("fail"))
                	success = false;                
                else 
                	success = true;
                
              //Successful login
    			if (success) {
    				    				
    				setLoginInfo(sb.toString());
    				finish();
    			} else {
    				mPasswordView.setError(getString(R.string.error_incorrect_password));
    				mPasswordView.requestFocus();
    			}
                	
	        }
	        catch(Exception e){
	                Log.e("log_tag", "Error  converting result "+e.toString());
	        }
			
			
		}
		public void setLoginInfo(String data){
			
			
			try{				
				//Create array
				JSONArray jArray = new JSONArray(data);
				//JSON Object to get info out of 
				JSONObject jObj = jArray.getJSONObject(0);
				db.open();
				long success = db.updateUserInfo(jObj.getString("id"), jObj.getString("username"),
						jObj.getString("full_name"), jObj.getString("email"), jObj.getInt("status"),
						jObj.getString("phone"));
				Log.d("Insert Attempt", "Just tried to insert the user info");
				//if (success > 0)
				db.close();
					
				
			}
			catch (Exception e){
				// TODO: Handle exception
				Log.e("log_tag", "Error parsing Data " + e.toString());
			}
			
			
		}

		@Override
		protected void onCancelled() {
			mAuthTask = null;
		showProgress(false);
		}
	}
}
